For simple, variable speed applications up to 45 kW
Combining VARIBLOC®® and VARIMOT®® variable speed gear units with all types of reduction gear units within the SEW‑EURODRIVE modular concept creates variable speed drives with a low output speed and high output torque. Combining variable speed gearmotors with helical, parallel-shaft helical, helical-bevel and helical-worm gear units has proven effective at low speeds.
Variable-speed gear units are available with DRS.. and DRE.. motors. This means they meet the European requirements on efficiency levels and nearly all international efficiency levels.
Your advantages:
- Increased starting torque
- Large permitted overhung loads of the reduction gear units
- Large number of finely stepped gear ratios of the reduction gear unit, depending on size
- Choice of manual or remote speed control
- Easy operation
The foot- and flange-mounted versions can also be used to power machines without a reduction gear unit.
Speed can be adjusted mechanically, e.g. with a handwheel, or electromechanically using a servomotor.
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VU/VZ series
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In the power range up to 45 kW, the VU and VZ designs of the VARIBLOC®®wide V-belt variable speed gearmotors are used. Typical speed setting ranges are 1:4, 1:6 and 1:8. The U- or Z-shaped power flow and numerous combination possibilities with reduction gear units mean that these speed gearmotors can be supplied in a broad range of designs. They can easily be tailored to the most diverse machine structures.
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Technical data
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VARIBLOC®®
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Maximum motor power 4-pole [kW]
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Possible power flow
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Maximum setting range for version
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IE1
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IE2
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Ventilated
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Closed
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VU / VZ 01
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0.55
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–
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U + Z
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1 : 6
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–
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VU / VZ 11
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1.1
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0.75
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U + Z
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1 : 8
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1 : 6
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VU / VZ 21
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3
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2.2
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U + Z
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1 : 8
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1 : 6
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VU / VZ 31
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5.5
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4
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U + Z
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1 : 8
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1 : 6
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VU / VZ 41
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11
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9.2
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U + Z
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1 : 6
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1 : 4
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VU 51
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22
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22
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nur U
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1 : 6
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–
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VU 6
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45
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45
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nur U
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1 : 4
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–
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D series
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Friction disk variable speed gearmotors VARIMOT®® The D series is suited for power a power range up to 11 kW and speed setting ranges 1:4 or 1:5. The contact pressure between the driving pulley and the friction ring required for torque transmission is set automatically. The speed can even be adjusted when the gearmotor is at standstill.
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Technical data
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VARIMOT®®
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Maximum motor power [kW]
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Max. setting range
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D 16
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1.1
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1 : 5
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D 26
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2.2
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1 : 5
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